若2x+3=5x-1,则6x-5≡().
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
若x^2+3x-(1)/(3)=0,则(x-3)/(3x^2-6x)/[x+2-(5)/(x-2)]的值是多少
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),
6/(x+1)=(x+5)/[x(x+1)] (3-x)/(x-4)+1/(4-x)=1 2/(1+x)-3/(1-x)
解方程(x+1/x+2)-(x+2/x+3)=(x+5/x+6)-(x+6/x+7)
解方程:x+2/x+1-x+3/x+2=x+6/x+5-x+7/x+6